ASNT STUDY GUIDE COMPREHENSIVE Updated
Exam 2026 WITH Recent Newest Verified And
Well Analyzed Exam Questions (Actual Exam
2026-2027) Correct Detailed & Verified
ANSWERS (100% Accurate Solutions) ALREADY
GRADED A+||NEWEST VERSION Of The Exam
Guarantee Pass!!
The Symbol R means:
a. rem
b. rad
c. roentgen
d. radiation - ANSWERS-c. roentgen
A declared pregnant radiographer or assistant may receive no more than __________
for the entire pregnancy.
a. 500 mR (5000 uSv)
b. 5000 mR (50000 uSv)
c. 100 mR (1000 uSv)
d. 5 R (50 mSv) - ANSWERS-a. 500 mR (5000 uSv)
An un-born fetus may receive no more than __________ for the entire pregnancy.
a. 100 mR (1000 uSv)
b. 500 mR (5000 uSv)
c. 5 R (50 mSv)
d. 5000 mR (50000 uSv) - ANSWERS-b. 500 mR (5000 uSv)
,Assuming you have 88 Ci of Ir-192 (3256 GBq), where would you place your high
radiation boundary? Assume a R factor of 5.2 R (52 mSv).
a. 68 ft (20.73 m)
b. 96 ft (29.26 m)
c. 43 ft (13.1 m)
d. 27 ft (8.23 m) - ANSWERS-a. 68 ft (20.73 m)
Your cobalt source of 61 Ci (2257 GBq) is exposed for one single 30-min exposure.
This is the only exposure that will be made that day. Assume a 14.0 R (140 mSv) per
curie factor, shooting through a 3 half-value collimator. Standing at 100 ft (30.48 m),
what will your total exposure be?
a. 11.0 mR (110 uSv)
b. 5.3 mR (53 uSv)
c. 8.8 mR (88 uSv)
d. 4.4 mR (44 uSv) - ANSWERS-b. 5.3 mR (53 uSv)
A monitored person may receive up to 5000 mR (50000 uSv) per year. What would be
considered an excessive amount of radiation exposure to that individual?
a. exposures of more than 100 mR (1000 uSv) in one week.
b. any exposure over 1250 mR (12500 uSv) in a quarter.
c. any unnecessary exposure to radiation
d. exposures of 500 mR/h (5000 uSv) - ANSWERS-c. any unnecessary exposure to
radiation
The primary form of shielding provided by modern exposure devices is:
a. steel
b. lead
c. depleted uranium (DU)
d. water - ANSWERS-c. depleted uranium (DU)
,A thickness of 0.19 in. (4.83 mm) of lead will reduce the exposure of Ir-192 to one-half
its original intensity. This is known as the:
a. half-layer value of lead for the energies associated with Ir-192
b. half-life value of lead for the energies associated with Ir-192
c. half-value layer of lead for the energies associated with Ir-192
d. half-value of lead for the energies associated with Ir-192 - ANSWERS-c. half-value
layer of lead for the energies associated with Ir-192
Assume that 0.19 in. (4.83 mm) of lead is 1 half-value layer. How many half-value layers
would you have with a sheet of lead 0.57 in. (14.48 mm) in thickness?
a. 1 half-value layer
b. 3 half-value layers
c. 5 half-value layers
d. 2 half-value layers - ANSWERS-b. 3 half-value layers
Assume that 0.19 in. (4.83 mm) of lead is 1 half-value layer, and you have a total of 3
half-value layers of lead between you and 100 mR (1000 uSv), what would your
exposure rate be?
a. 50 mR (500 uSv)
b. 25 mR (250 uSv)
c. 12.5 mR (125 uSv)
d. 33 mR (330 uSv) - ANSWERS-c. 12.5 mR (125 uSv)
Assume 0.50 in. (12.7 mm) of steel equals 1 half-value layer for Ir-192. How many half-
value layers would you have with 1.5 in. (38.1 mm) of steel?
a. 3.28 half-value layers
b. 3.0 half-value layers
c. 3.05 half-value layers
d. 0.328 half-value layers - ANSWERS-b. 3.0 half-value layers
, Assuming 0.19 in. (4.83 mm) of lead is 1 half-value layer, a piece of lead 0.38 in. (9.65
mm) thick would reduce the exposure rate by:
a. 25%
b. 50%
c. 75%
d. 100% - ANSWERS-c. 75%
What is the maximum curie strength of a cobalt-60 source in a type A package?
a. 10.8 Ci (399.6 GBq)
b. 25.0Ci (999 GBq)
c. 32.0 Ci (1184 GBq)
d. 45.0 Ci (1665 GBq) - ANSWERS-a. 10.8 Ci (399.6 GBq)
What is the maximum curie strength of an iridium-192 source in a type A package?
a. 10.8 Ci (399.6 GBq)
b. 25.0Ci (999 GBq)
c. 32.0 Ci (1184 GBq)
d. 45.0 Ci (1665 GBq) - ANSWERS-b. 25.0Ci (999 GBq)
A source is being transported with a surface reading of 25 mR and 3 mR at 39.37 in.
(250 uSv and 30 uSv at 1 m). Which transport label must be used?
a. White I
b. Yellow II
c. Yellow III
d. Yellow II or III - ANSWERS-c. Yellow III
A White I transport label's maximum transport index is:
a. 1
b. less than 0.5
Exam 2026 WITH Recent Newest Verified And
Well Analyzed Exam Questions (Actual Exam
2026-2027) Correct Detailed & Verified
ANSWERS (100% Accurate Solutions) ALREADY
GRADED A+||NEWEST VERSION Of The Exam
Guarantee Pass!!
The Symbol R means:
a. rem
b. rad
c. roentgen
d. radiation - ANSWERS-c. roentgen
A declared pregnant radiographer or assistant may receive no more than __________
for the entire pregnancy.
a. 500 mR (5000 uSv)
b. 5000 mR (50000 uSv)
c. 100 mR (1000 uSv)
d. 5 R (50 mSv) - ANSWERS-a. 500 mR (5000 uSv)
An un-born fetus may receive no more than __________ for the entire pregnancy.
a. 100 mR (1000 uSv)
b. 500 mR (5000 uSv)
c. 5 R (50 mSv)
d. 5000 mR (50000 uSv) - ANSWERS-b. 500 mR (5000 uSv)
,Assuming you have 88 Ci of Ir-192 (3256 GBq), where would you place your high
radiation boundary? Assume a R factor of 5.2 R (52 mSv).
a. 68 ft (20.73 m)
b. 96 ft (29.26 m)
c. 43 ft (13.1 m)
d. 27 ft (8.23 m) - ANSWERS-a. 68 ft (20.73 m)
Your cobalt source of 61 Ci (2257 GBq) is exposed for one single 30-min exposure.
This is the only exposure that will be made that day. Assume a 14.0 R (140 mSv) per
curie factor, shooting through a 3 half-value collimator. Standing at 100 ft (30.48 m),
what will your total exposure be?
a. 11.0 mR (110 uSv)
b. 5.3 mR (53 uSv)
c. 8.8 mR (88 uSv)
d. 4.4 mR (44 uSv) - ANSWERS-b. 5.3 mR (53 uSv)
A monitored person may receive up to 5000 mR (50000 uSv) per year. What would be
considered an excessive amount of radiation exposure to that individual?
a. exposures of more than 100 mR (1000 uSv) in one week.
b. any exposure over 1250 mR (12500 uSv) in a quarter.
c. any unnecessary exposure to radiation
d. exposures of 500 mR/h (5000 uSv) - ANSWERS-c. any unnecessary exposure to
radiation
The primary form of shielding provided by modern exposure devices is:
a. steel
b. lead
c. depleted uranium (DU)
d. water - ANSWERS-c. depleted uranium (DU)
,A thickness of 0.19 in. (4.83 mm) of lead will reduce the exposure of Ir-192 to one-half
its original intensity. This is known as the:
a. half-layer value of lead for the energies associated with Ir-192
b. half-life value of lead for the energies associated with Ir-192
c. half-value layer of lead for the energies associated with Ir-192
d. half-value of lead for the energies associated with Ir-192 - ANSWERS-c. half-value
layer of lead for the energies associated with Ir-192
Assume that 0.19 in. (4.83 mm) of lead is 1 half-value layer. How many half-value layers
would you have with a sheet of lead 0.57 in. (14.48 mm) in thickness?
a. 1 half-value layer
b. 3 half-value layers
c. 5 half-value layers
d. 2 half-value layers - ANSWERS-b. 3 half-value layers
Assume that 0.19 in. (4.83 mm) of lead is 1 half-value layer, and you have a total of 3
half-value layers of lead between you and 100 mR (1000 uSv), what would your
exposure rate be?
a. 50 mR (500 uSv)
b. 25 mR (250 uSv)
c. 12.5 mR (125 uSv)
d. 33 mR (330 uSv) - ANSWERS-c. 12.5 mR (125 uSv)
Assume 0.50 in. (12.7 mm) of steel equals 1 half-value layer for Ir-192. How many half-
value layers would you have with 1.5 in. (38.1 mm) of steel?
a. 3.28 half-value layers
b. 3.0 half-value layers
c. 3.05 half-value layers
d. 0.328 half-value layers - ANSWERS-b. 3.0 half-value layers
, Assuming 0.19 in. (4.83 mm) of lead is 1 half-value layer, a piece of lead 0.38 in. (9.65
mm) thick would reduce the exposure rate by:
a. 25%
b. 50%
c. 75%
d. 100% - ANSWERS-c. 75%
What is the maximum curie strength of a cobalt-60 source in a type A package?
a. 10.8 Ci (399.6 GBq)
b. 25.0Ci (999 GBq)
c. 32.0 Ci (1184 GBq)
d. 45.0 Ci (1665 GBq) - ANSWERS-a. 10.8 Ci (399.6 GBq)
What is the maximum curie strength of an iridium-192 source in a type A package?
a. 10.8 Ci (399.6 GBq)
b. 25.0Ci (999 GBq)
c. 32.0 Ci (1184 GBq)
d. 45.0 Ci (1665 GBq) - ANSWERS-b. 25.0Ci (999 GBq)
A source is being transported with a surface reading of 25 mR and 3 mR at 39.37 in.
(250 uSv and 30 uSv at 1 m). Which transport label must be used?
a. White I
b. Yellow II
c. Yellow III
d. Yellow II or III - ANSWERS-c. Yellow III
A White I transport label's maximum transport index is:
a. 1
b. less than 0.5
